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Table 3 Receiver operating characteristic (ROC) curve evaluation for all-cause mortality prediction

From: Relationship and prognostic importance of thyroid hormone and N-terminal pro-B-Type natriuretic peptide for patients after acute coronary syndromes: a longitudinal observational study

Prediction of all-cause mortality: ROC analysis

Area under the curve (AUC)

95 % CI

p

Age

0.642

0.604–0.678

0.003

NYHA class

0.690

0.653–0.725

<0.001

NT-pro- BNP

0.675

0.638–0.711

<0.001

fT3/fT4

0.684

0.647–0.719

<0.001

NT-pro-BNP & fT3/fT4 model

0.732

0.693–0.766

<0.001

Combined model

0.800

0.753–0.817

<0.001

ROC curves comparison – Combined model vs:

AUC (difference)

95 % CI

p

Age

0.150

0.064–0.235

<0.001

NYHA class

0.090

0.030–0.150

0.003

NT-pro-BNP

0.115

0.023–0.207

0.014

fT3/fT4

0.103

0.034–0.173

0.004

NT-pro-BNP & fT3/fT4 model

0.055

−0.032–0.142

0.218

  1. CI confidence interval, NT-pro-BNP N-terminal pro-B-Type natriuretic peptide, fT3/fT4 Free Triiodothyronine/Free Thyroxine ratio, fT4 Free Thyroxine, NYHA New York Heart Association functional class; Combined model - composed by parameters of age, NYHA, NT-pro-BNP, and fT3/fT4